This IS interesting, although we all can see the simplistic minor-ness of this particular "option", whether it be offered by the factory or by your local dealer. GM cars and sales were getting wacky in late 1968 at the dealerships.

I went there with my Dad (I was eight and loved cars and knew specific cars by sight) and I do recall showroom arguements and challenges for JUST the right car that my Dad wanted (a Cutlass, but the event was generic to all during that year). We were not there for 1-2 days, we went back and forth there for 2-3 weeks!!

I know for a fact, AS MANY OF US DO, that your local dealer could offer just about anything he could get his hands on, even if it was not for a Pontiac or specifically for a Firebird. If you wanted it and paid for it, he'd find a way to install it on your bird in many cases. Hence the birth of many supposed "one-of-a-kind" FGFs, Camaros, Mustangs, GTOs, etc etc.

At the time, visiting and buying in the showroom was a mundane fact of life, but now we see how exciting it truly was in the late '60s.